动机空载电流太大是什么原因造成的？

The problem of the present world is that those who are imaginative have little experience_________those who are experienced have weak imagination.

A．unless

B．although

C．because

D．while

有如下函数过程:
Function lj(x As Integer) As Long
Dim s As Long
Dim i As Integer
s=0
For i = 1 To x
s=s+ i
Next i
1j= s
End Function
在窗体上添加一个命令按钮，名为Command1, 编写事件过程调用该函数：
Private Sub Command1 Click()
Dim i As Integer
Dim sum As Long
For i = 1 To 5
sum = sum + 1j(i)
Next i
Print sum
End Sub

A．25

B．35

C．45

D．55

银屑病表皮更替时间大约是（）

A.14～18天

B.3～4天

C.36～42天

D.8～12天

E.37.5小时

在正常运行时可能出现爆炸性气体混合物的环境属于爆炸性气体环境危险区域划分中的（）。

A.3区

B.2区

C.1区

D.0区

魏文帝登基之后，册封孙权，而吴国的某些人建议孙权不要接受册封，而是自称什么？